Veracity is defined as being honest and telling the truth and is related to the principle of autonomy. It is the basis of the trust relationship established between a patient and a health care provider. Veracity is what binds the patient and the clinician as they seek to establish mutual treatment goals. Patients are expected to be truthful about their medical history, treatment expectations, and other relevant facts. Clinicians, for their part, must be truthful about the diagnosis, treatment options, benefits and disadvantages of each treatment option, cost of treatment, and the longevity afforded by the various treatment options. This allows patients to use their autonomy to make decisions in their own best interest. The obligation of veracity, based on respect for patients and autonomy, is acknowledged in most codes of ethics, including the codes of the ADA.